Edwabd scheppees and smile scheppees



UNITED STATES PATENT OFFICE,

EDWARD SOHEPPERS AND EMILE SOHEPPERS, OF PHILADELPHIA, PA.

MANUFACTURE OF TEXTILE FABRVICS.

SPECIFICATION forming part of Letters Patent'No. 362,318, dated May 3, 1887.

Application filed June 20,1884. Serial No. 135,576. (No specimens.) Patented in England October 7,1884, No.13,274; in France v October 7, 1884, No. 164,648; and in Belgium October 7, 1884, No. 66,523.

fabric of yarn having little or no twist, and

this object we attain in the manner hereinafter set forth.

We first produce, by spinning and twisting 'in the ordinary manner, a strand of wool or other animal fiber, and then double the same, by a reverse twist, with a strand of cotton or other vegetable fiber, so that in the doubled yarn thus produced the first strand will have lost all or nearly all of the twist originally imparted to it. For instance, if the wool strand is originally given a right twist of fifteen to the inch, and is then doubled with the cotton strand by a left twist of twelve to the inch, the wool strand in the doubled yarn will have a twist of only three to the inch.- All or any part of the original twist may thus be removed. The doubling twist may be in the same direction as the twist in the cotton strand,or in the reverse direction; but it must in all cases be the reverse of the twist in the woolen strand. The doubled strand is then used in the manufac ture of a fabric, forming either the warp or weft, or both, if the fabric is woven, or it may be used in the production of a knitted fabric, if desired. The fabric is then subjected toa treatment which will destroy the cotton or other vegetable fiber without injuriously affecting the wool or animal fiber. The preferable treatment for this purpose is the carbonization of the cotton by subjecting it to the action of hydrochloric acid gas or sulphuric acid, and as a result of the treatment the fabric is constituted wholly or in part of strands having little or no twist, butprcserving the soft, full, and pliable character of the original sliver. The twisted cotton strands are thus the means of permitting the removal of the twist from the woolen strands and of enabling these untwisted or slightly-twisted strands to resist the strains to which the doubled yarn is subjected during the process of manufacturing the fabric.

We have described our invention as applied to yarns made by twisting animal and vegetable fibers together; but these terms are intended to includeany fibers so differing in character that one can be destroyed without affecting the other.

By the practice of our invention fabrics presenting afine appearance can be produced from inferior stock, as'the untwisted strands have none of the harshness or wiriness of ordinary twisted yarn. V

We are aware that it is old to spin together two strands so as to remove or partially remove the twist from one of them; and we are also aware that the cotton strand has been eliminated from a compound cotton and wool thread by a sulphuric-acid treatment; hence we claim neither of these things separately considered, as neither of them is alone capable of attaining the result of our invention; but 7 We do claim as our invention and desire to secure by Letters Patent- The mode herein described of producing textile fabrics, said mode consisting in first spinning a strand of wool or other animal fiber, then doubling the same with a' strand of cotton or other vegetable fiber bya reverse twist, which wholly or partiallyuntwists the wool strand, then producing afabric containing such compound thread, and finally subjecting said fabric to the action of an agent which will destroy the vegetable fiber, leaving intact the untwisted or slightly-twisted strand of animal fiber, all substantially as specified.

In testimony whereof we have signed our names to this specification in the presence of HARRY SMITHa 

